micro/runtime/local/source/go/golang.go
2020-01-19 17:47:27 +00:00

94 lines
1.6 KiB
Go

// Package golang is a source for Go
package golang
import (
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/micro/go-micro/runtime/local/source"
)
type Source struct {
Options source.Options
// Go Command
Cmd string
Path string
}
func (g *Source) Fetch(url string) (*source.Repository, error) {
purl := url
if parts := strings.Split(url, "://"); len(parts) > 1 {
purl = parts[len(parts)-1]
}
// name of repo
name := filepath.Base(url)
// local path of repo
path := filepath.Join(g.Path, purl)
args := []string{"get", "-d", url, path}
cmd := exec.Command(g.Cmd, args...)
if err := cmd.Run(); err != nil {
return nil, err
}
return &source.Repository{
Name: name,
Path: path,
URL: url,
}, nil
}
// Commit is not yet supported
func (g *Source) Commit(r *source.Repository) error {
return nil
}
func (g *Source) String() string {
return "golang"
}
// whichGo locates the go command
func whichGo() string {
// check GOROOT
if gr := os.Getenv("GOROOT"); len(gr) > 0 {
return filepath.Join(gr, "bin", "go")
}
// check path
for _, p := range filepath.SplitList(os.Getenv("PATH")) {
bin := filepath.Join(p, "go")
if _, err := os.Stat(bin); err == nil {
return bin
}
}
// best effort
return "go"
}
func NewSource(opts ...source.Option) source.Source {
options := source.Options{
Path: os.TempDir(),
}
for _, o := range opts {
o(&options)
}
cmd := whichGo()
path := options.Path
// point of no return
if len(cmd) == 0 {
panic("Could not find Go executable")
}
return &Source{
Options: options,
Cmd: cmd,
Path: path,
}
}